167.43% is the change from 307 to 821
Calculation steps:
[( 821 - 307 ) ÷ 307] x 100 = 167.43%
Formula
Percentage change = [(821 - 307) / 307] x 100
Subtract the new number by the original number
821 - 307 = 514
514 ÷ 307 = 1.6742671009771988
1.6742671009771988 x 100 = 167.43%